CMB credit card limit increase is divided into permanent limit increase and temporary limit increase. Different limit increase methods have different techniques. Tips for permanently increasing your credit limit: 1. Spend as much as possible with your card. The number and amount of purchases using credit cards should be as high as possible. Generally speaking, the total consumption amount within six months should be at least 30, which can prove that the cardholder uses the credit card more frequently and has high loyalty to the bank. The bank's credit card center will adjust the limit based on your credit card utilization and repayment history. 2. Repay in full and on time to avoid late payment fees. After using a credit card for consumption, make sure to repay the money on time and in full before the monthly repayment date. Once the payment is overdue, not only will you have to pay high late fees, but you will also have a bad credit record, which will affect your future credit card applications. If you cannot repay in time, you must call the bank's customer service hotline in advance to explain the reasons to the manual customer service and apply for a grace period of a few days. Currently, most banks can grant a grace period of 3 days, among which China Guangfa Bank and China Construction Bank can grant a grace period of 5 days. 3. Take the initiative to apply for a quota increase after half a year. Under normal circumstances, after using a credit card for half a year, the cardholder can actively apply to increase the temporary limit or credit limit of the credit card. Currently, there are many ways to apply for a limit increase. You can apply for a limit increase online, by phone, text message, or WeChat. The details depend on the way the bank provides services. 4. The threat of card cancellation sometimes works. Use customer service and tell the customer service staff that you want to cancel the card. Relevant personnel may try to retain them by increasing their quotas. Tips for temporarily increasing the limit: Applying for a temporary limit is much simpler than permanently increasing the limit, and banks will also withdraw from activities during holidays and take the initiative to temporarily increase the limit. However, if you usually make a temporary limit increase, you also need to apply, and the bank will review and approve it based on your actual situation. However, you need to pay attention to the temporary quota increase. The increased quota is generally 20 to 50 of the existing quota. The period for increasing the temporary quota is usually one month, and the maximum period shall not exceed three months. After the temporary limit expires, the credit card limit will be restored to the original credit limit. After the temporary limit expires, the used temporary limit (the portion exceeding the fixed limit) will be included in the minimum payment amount of the latest bill and must be paid off in one lump sum on the due payment date.